FLEX 10K Embedded Programmable Logic Device Family Data Sheet
fMAX
N
togLC
=
=
=
Maximum operating frequency in MHz
Total number of logic cells used in the device
Average percent of logic cells toggling at each clock
(typically 12.5%)
K
=
Constant, shown in Tables 114 and 115
Table 114. FLEX 10K K Constant Values
Device
K Value
EPF10K10
EPF10K20
EPF10K30
EPF10K40
EPF10K50
EPF10K70
EPF10K100
82
89
88
92
95
85
88
Table 115. FLEX 10KA K Constant Values
Device
K Value
EPF10K10A
EPF10K30A
EPF10K50V
EPF10K100A
EPF10K130V
EPF10K250A
17
17
19
19
22
23
This calculation provides an ICC estimate based on typical conditions with
no output load. The actual ICC should be verified during operation
because this measurement is sensitive to the actual pattern in the device
and the environmental operating conditions.
To better reflect actual designs, the power model (and the constant K in
the power calculation equations) for continuous interconnect FLEX
devices assumes that logic cells drive FastTrack Interconnect channels. In
contrast, the power model of segmented FPGAs assumes that all logic
cells drive only one short interconnect segment. This assumption may
lead to inaccurate results, compared to measured power consumption for
an actual design in a segmented interconnect FPGA.
Figure 32 shows the relationship between the current and operating
frequency of FLEX 10K devices.
Altera Corporation
121
ALTERA [ ALTERA CORPORATION ]
